滑行艇是一种依靠动升力高速航行的船体，其流场复杂。为了捕捉滑行艇航行的流场特征，本文根据滑行艇的流场梯度变化建立合适的结构网格，采用RANS结合VOF方法对滑行艇不同航速的运动进行数值模拟，将不同体积傅汝德数下的滑行艇阻力的计算值与理论值和试验值进行对比，验证了数值方法的可靠性。详细分析了滑行艇航行的流场，包括水面兴波、方尾虚长度以及侧向喷溅现象。最后根据滑行艇的流场完整性，设计了外挂对转桨，并给出了自航滑行艇的流场特性。
Planing craft is a high-speed hull by dynamic lifting force, which makes complex fluid field. In this paper, a multi-block structured grid system is built according to the fluid gradient to capture the fluid field in detail first, then RANS and VOF are used to model the cruising at different speeds. The resistance of numerical simulation is compared with that of theoretical methods and experimental results, and agrees well. Numerical results present the cruising states including water waves, virtual length caused by transom stern and longitudinal spray. At last, the flow field of the self-propulsion planning craft is investigated with a contra-rotating propeller.
2019,41(9): 57-60 收稿日期：2018-09-18
DOI：10.3404/j.issn.1672-7649.2019.09.011
分类号：U661.32
基金项目：机器人学国家重点实验室开放课题资助项目（2016-O04）；中央高校基本科研业务费专项资金资助（3132017030，3132016339）
作者简介：吴利红(1978-),女,博士,副教授,研究方向为船舶与海洋工程。
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